ID   I1IIX6_BRADI            Unreviewed;       174 AA.
AC   I1IIX6;
DT   13-JUN-2012, integrated into UniProtKB/TrEMBL.
DT   13-JUN-2012, sequence version 1.
DT   27-MAR-2024, entry version 60.
DE   RecName: Full=Ribulose bisphosphate carboxylase small subunit, chloroplastic {ECO:0000256|HAMAP-Rule:MF_00860};
DE            Short=RuBisCO small subunit {ECO:0000256|HAMAP-Rule:MF_00860};
GN   Name=100829841 {ECO:0000313|EnsemblPlants:KQJ86978};
GN   Synonyms=RBCS {ECO:0000256|HAMAP-Rule:MF_00860};
GN   ORFNames=BRADI_4g08800v3 {ECO:0000313|EMBL:KQJ86978.1};
OS   Brachypodium distachyon (Purple false brome) (Trachynia distachya).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC   Pooideae; Stipodae; Brachypodieae; Brachypodium.
OX   NCBI_TaxID=15368 {ECO:0000313|EMBL:KQJ86978.1};
RN   [1] {ECO:0000313|EMBL:KQJ86978.1, ECO:0000313|EnsemblPlants:KQJ86978}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Bd21 {ECO:0000313|EMBL:KQJ86978.1,
RC   ECO:0000313|EnsemblPlants:KQJ86978};
RX   PubMed=20148030; DOI=10.1038/nature08747;
RG   International Brachypodium Initiative;
RT   "Genome sequencing and analysis of the model grass Brachypodium
RT   distachyon.";
RL   Nature 463:763-768(2010).
RN   [2] {ECO:0000313|EMBL:KQJ86978.1}
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=Bd21 {ECO:0000313|EMBL:KQJ86978.1};
RG   The International Brachypodium Initiative;
RA   Lucas S., Harmon-Smith M., Lail K., Tice H., Grimwood J., Bruce D.,
RA   Barry K., Shu S., Lindquist E., Wang M., Pitluck S., Vogel J.P.,
RA   Garvin D.F., Mockler T.C., Schmutz J., Rokhsar D., Bevan M.W.;
RT   "WGS assembly of Brachypodium distachyon.";
RL   Submitted (JUN-2017) to the EMBL/GenBank/DDBJ databases.
RN   [3] {ECO:0000313|EnsemblPlants:KQJ86978}
RP   IDENTIFICATION.
RC   STRAIN=cv. Bd21 {ECO:0000313|EnsemblPlants:KQJ86978};
RG   EnsemblPlants;
RL   Submitted (AUG-2018) to UniProtKB.
CC   -!- FUNCTION: RuBisCO catalyzes two reactions: the carboxylation of D-
CC       ribulose 1,5-bisphosphate, the primary event in carbon dioxide
CC       fixation, as well as the oxidative fragmentation of the pentose
CC       substrate. Both reactions occur simultaneously and in competition at
CC       the same active site. Although the small subunit is not catalytic it is
CC       essential for maximal activity. {ECO:0000256|HAMAP-Rule:MF_00860,
CC       ECO:0000256|RuleBase:RU003627}.
CC   -!- SUBUNIT: Heterohexadecamer of 8 large and 8 small subunits.
CC       {ECO:0000256|HAMAP-Rule:MF_00860, ECO:0000256|RuleBase:RU003627}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast {ECO:0000256|HAMAP-
CC       Rule:MF_00860}.
CC   -!- MISCELLANEOUS: The basic functional RuBisCO is composed of a large
CC       chain homodimer in a 'head-to-tail' conformation. In form I RuBisCO
CC       this homodimer is arranged in a barrel-like tetramer with the small
CC       subunits forming a tetrameric 'cap' on each end of the 'barrel'.
CC       {ECO:0000256|HAMAP-Rule:MF_00860}.
CC   -!- SIMILARITY: Belongs to the RuBisCO small chain family.
CC       {ECO:0000256|HAMAP-Rule:MF_00860, ECO:0000256|RuleBase:RU003627}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; CM000883; KQJ86978.1; -; Genomic_DNA.
DR   RefSeq; XP_003577109.1; XM_003577061.3.
DR   AlphaFoldDB; I1IIX6; -.
DR   STRING; 15368.I1IIX6; -.
DR   EnsemblPlants; KQJ86978; KQJ86978; BRADI_4g08800v3.
DR   GeneID; 100829841; -.
DR   Gramene; KQJ86978; KQJ86978; BRADI_4g08800v3.
DR   KEGG; bdi:100829841; -.
DR   eggNOG; ENOG502QT0M; Eukaryota.
DR   HOGENOM; CLU_098114_1_0_1; -.
DR   InParanoid; I1IIX6; -.
DR   OMA; YREHGNS; -.
DR   OrthoDB; 5482775at2759; -.
DR   Proteomes; UP000008810; Chromosome 4.
DR   GO; GO:0009507; C:chloroplast; IEA:UniProtKB-SubCell.
DR   GO; GO:0016984; F:ribulose-bisphosphate carboxylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009853; P:photorespiration; IEA:UniProtKB-UniRule.
DR   GO; GO:0019253; P:reductive pentose-phosphate cycle; IEA:UniProtKB-UniRule.
DR   CDD; cd03527; RuBisCO_small; 1.
DR   Gene3D; 3.30.190.10; Ribulose bisphosphate carboxylase, small subunit; 1.
DR   HAMAP; MF_00859; RuBisCO_S_bact; 1.
DR   InterPro; IPR024681; RuBisCO_ssu.
DR   InterPro; IPR000894; RuBisCO_ssu_dom.
DR   InterPro; IPR024680; RuBisCO_ssu_N.
DR   InterPro; IPR036385; RuBisCO_ssu_sf.
DR   PANTHER; PTHR31262; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL CHAIN 1, CHLOROPLASTIC; 1.
DR   PANTHER; PTHR31262:SF10; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL SUBUNIT, CHLOROPLASTIC 2; 1.
DR   Pfam; PF12338; RbcS; 1.
DR   Pfam; PF00101; RuBisCO_small; 1.
DR   PRINTS; PR00152; RUBISCOSMALL.
DR   SMART; SM00961; RuBisCO_small; 1.
DR   SUPFAM; SSF55239; RuBisCO, small subunit; 1.
PE   3: Inferred from homology;
KW   Calvin cycle {ECO:0000256|ARBA:ARBA00022567, ECO:0000256|HAMAP-
KW   Rule:MF_00860};
KW   Carbon dioxide fixation {ECO:0000256|ARBA:ARBA00023300, ECO:0000256|HAMAP-
KW   Rule:MF_00860}; Chloroplast {ECO:0000256|HAMAP-Rule:MF_00860};
KW   Photorespiration {ECO:0000256|ARBA:ARBA00023238, ECO:0000256|HAMAP-
KW   Rule:MF_00860};
KW   Photosynthesis {ECO:0000256|ARBA:ARBA00022531, ECO:0000256|HAMAP-
KW   Rule:MF_00860};
KW   Plastid {ECO:0000256|HAMAP-Rule:MF_00860, ECO:0000256|RuleBase:RU003627};
KW   Reference proteome {ECO:0000313|Proteomes:UP000008810};
KW   Transit peptide {ECO:0000256|ARBA:ARBA00022946}.
FT   DOMAIN          57..165
FT                   /note="Ribulose bisphosphate carboxylase small subunit"
FT                   /evidence="ECO:0000259|SMART:SM00961"
SQ   SEQUENCE   174 AA;  19520 MW;  46527A49BA9AB358 CRC64;
     MAPTVMASSA TSVAPFQGLK STAGLPLSRR SSNSLGRVSN GGRISCMQVW PIEGIKKFET
     LSYLPPLSVE SLLKQIEYLI RSKWVPCLEF SKVGFVFREH NSSPGYYDGR YWTMWKLPMF
     GCTDATQVLK ELEEVKKEYP DAYVRIIGFD NTRQVQCISF IAFKPPGCEE SGKA
//